The date of publication of the patent is the same as the date of announcement.

Legal analysis: 1. Publication date: refers to the date when the patent department, after receiving the application for a patent for invention, finds that it conforms to the provisions of the Patent Law after preliminary examination, and publishes it after 18 months from the date of application. It can be published as soon as possible at the request of the applicant (the date of publication is invention patent, utility model and design have no date of publication).

2. Announcement date of authorization: refers to the date when the patent department makes a decision to grant a patent right, issues a patent certificate and registers the announcement at the same time. The patent right shall take effect as of the date of announcement.

Therefore, the public day is only the beginning of the audit, and the authorization announcement day is the symbol of patent success.

Legal basis: People's Republic of China (PRC) Patent Law.

Article 26 Where an applicant applies for a patent for invention or utility model, he shall submit the written request, specification and its abstract, patent right and other documents.

Article 34 After receiving an application for a patent for invention, the administrative department for patent in the State Council, after preliminary examination, finds that it conforms to the provisions of this Law, and shall publish it after 18 months from the date of filing. The patent administration department of the State Council may publish its application at an early date upon the request of the applicant.

Article 35 Within 3 years from the date of filing, the administrative department for patent in the State Council may, upon the request of the applicant at any time, make a substantive examination of the application; If the applicant fails to request substantive examination within the time limit without justifiable reasons, the application shall be deemed to have been withdrawn.

Article 39 If the application for a patent for invention is not found to be rejected after substantive examination, the administrative department for patent in the State Council shall make a decision to grant a patent right for invention, issue a patent certificate for invention, and register and announce it at the same time. The invention patent right shall take effect as of the date of announcement.